Description
Presentation of the Tamron 28-75mm F2.8 DI III RXD (Sony E/EF)
The Tamron 28-75mm F2.8 DI III RXD (Sony E/EF) is a high-speed lens designed for use with A7/9 series mirrorless cameras and capable of covering the 24×36 format. It is a standard 28-75mm zoom lens notable for its constant f/2.8 aperture. This constant f/2.8 zoom lens comprises 15 elements in 12 groups, including one LD (Low Dispersion) element, one XLD (eXtra Low Dispersion) element, two hybrid aspherical elements, and one molded aspherical element. It also features BBAr coating to reduce reflections. The Tamron 28-75mm’s diaphragm has 9 blades, and its minimum focusing distance is 19 cm, giving it a 0.34x magnification ratio.
The AF drive incorporates a sensor that precisely detects the lens position and an RXD (Rapid eXtra-silent stepping Drive) stepping motor optimized for AF control. This provides fast and accurate autofocus operation, allowing users to maintain exceptional sharpness on continuously moving subjects or during video recording.
Key features of the Tamron 28-75mm F2.8
- constant f/2.8 aperture
- 75mm telephoto lens, not 70mm
- Compactness and weight
- Manual focus ring (smoothness)
- General behavior of the objective
- Sharpness performance at the center of images even at the widest aperture
- Good vignetting management
